#include <stdio.h>

#include <string.h>

int main(int argc, char **argv)

{

	FILE *f=fopen("/dev/urandom", "r");

	char key[61];

	int i=0;

	char tmp;

	memset(key, 0, 61);

	while(i<60) {

		tmp=fgetc(f);

		if((tmp>='a' && tmp<='z') ||

		   (tmp>='A' && tmp<='Z') ||

		   (tmp>='0' && tmp<='9'))

			key[i++]=tmp;

	}

	puts(key);

	fclose(f);

}